Miner&#39;s lamp.



No, 796,870. PATBNTED AUG. 8, 1905. w. J. RUMP.

MINBRS LAMP.

APPLICATION FILED APP-.3, 1905.

51 mentor Wm ifgzlg'amlil um v UNITED STATES PATENT OFFICE.

MINERS LAMP.

Specification of Letters Patent.

Patented Aug. 8, 1905.

Application filed April 3, 1905. Serial No. 253,504.

To all whom it may concern:

Be it known that LWILLIAM J. BUMP, a citizen of the United States,residing at Ravine, in the county of Schuylkill and State ofPennsylvania, have invented new and useful Improvements in Mining-Lamps,of which the following is a specification.

The invention relates to an improvement in miners lamps, comprehendingspecifically a top therefor of peculiarconstruction whereby air isadmitted to the body of the lamp, while the oil therein is preventedfrom escaping.

The invention is illustrated in the accompanying drawings, whereinFigure 1 is a view in elevation of a lamp constructed in accordance withmy invention. Fig. 2 is a vertical section of the same, and Fig. 3 is avertical section on a line transverse to the section of Fig. 2.

Referring to the drawings, the lamp proper comprises a body 1 of usualshape, having a wick-tube 2 and the usual supporting-hook 3. Myinvention relates particularly to a cap 4:, designed to close the upperend of the lampbody. This cap comprises a plate member 5, hinged at 6 tothe body and having a depending flange portion 7 of a size to restsnugly within the upper end of the lamp-body. The flange 7 is ofcupformation, depending from the plate 5, so that the bottom plate 8 ofsaid flange member is spaced ashort distance from the plate member 5 toprovide a chamber 9.

- The chamber 9 communicates with the interior of the lamp-body by anaperture 10, formed in the plate 8, preferably located adjacent the edgeof this plate. The construction described provides a chambered capmember for the lamp-body, having a projecting rim to rest upon the upperend of the cap-body, with the walls of said cap contacting with theinterior wall of the lamp-body.

A tube 11, having a closed top 12, is inserted in the cap, the openlower endof the tube being in contact with the plate 8 of the flangemember 7. The tube is preferably secured centrally in an opening formedin the plate 5, the closed top of the tube being perforated at 13. Theedge of the tube-wall in contact with the plate 8 is circumferentiallynotched, as at 1 1, to provide for the escape of air from the tub intothe chamber 9.

The operation of the construction will be readily apparent from theabove description, it being understoodthat airis admitted through theopening 13, through the body of the tube, through the notches 14:, intothe chamber 9, and from said chamber through the aperture 10 in saidbody. It is also obvious that the oil from the lamp-body will not underordinary circumstances be able to escape through the aperture 13.

Having thus described the invention, what is claimed as new is 1. Aminers lamp comprising a lamp-body, a chambered cap frictionallyengaging the lamp-body, a tube fitting within said cap and resting onthe lower wall thereof, the lower end of the tube being in communicationwith the chamber in the cap, the upper wall of the tube being formedwith acentral opening, and the lower wall of the cap being formed withan opening beyond the plane of the tube.

2. A cap for miners lamps comprising a plate, a cup-shaped bodydepending therefrom to provide a chamber in the cap, atube closed at theupper end and secured centrally of the plate with its lower endincontact with the bottom of the chamber, the upper end of said tube beingformed with an inlet, the lower end of the tube being notched toestablish communication between the tube and the cap-chamber, and abottom to the cup-shaped body being formed with an aperture beyond theplane of the tube.

In testimony whereof I affix my signature in presence of two witnesses.

' WILLIAM J. RUWP. l/Vitnesses:

LINcoLN MAcrrAMER, CHARLns K. SPANOAKE.

